Stock pusher



March 30 1926. 1,578,397

F. L. CONE STOCK PUSHER Filed Feb. I5, 1923 www this invention,referenceI may be had'V tol the i vaccompanying `drawings in Which-fFigurel isa side elevation' of the device.V

l at 6 and comprise segmental members,'each` "Figure 3.

Patented Mar. 1925.. 'l

FRANKL. conn, 0F WINDSOR, VERMONT.;

STOCK: Prism-iii. i 1

, Application ifiiefiy February 3,1923. serial No. s1-6,690.

To all whom t may concern.' .Y

Be it llnovv'n that I, FRANK L., Corni, a citizen of' the United States,.residingfat lVinclsor, lin the county Vof lVindsor and State ofVermont, have invented new and useful Improvements in Stock Pushfers(Case B) of which the following is a specification.

This invention relates to stoel;4 pushers Such as are used to engage andfeed forvvardthe stock in automatic lathes and screw machines. rFor thispurpose vit has been proposed ltonse aplurality of stookv-clampingelements urged-against they stock by spring rings sprung therearound,the* Whole being enclosed Within a sleeve provided with internalshoulders positioned to hold these elements from motion longitudinallyWithin the sleeve.4 'Thisvconstructiom h oW- ;ever,..has among otherstl'iedisadvantage that the size capacity of the machine is consid-verablygreduced sincelthe internal diameter of the series of elements ismaterially' smallv er than the internal diameter of the sleeve.

According 4to the Apresent i invention the stock-engaging elements havea? flexible interlocking connection -With the sleeve at one end only bywhich they can be made of in- `creased diameter since the sleeve is ,notrequired to house these elementsvand vtheir lSplmss- For a more completeunderstanding of l Figure 2 is a forward endelevationy Figure 31s alongitudinal section online Figure t is 'a cross section' on line 114-4.

Figure 5 is a perspective of one ofthe stock-engaging elements.

Referring to these figures, l indicates a sleeve having a reducedthreaded extremity 2 for attachment to the usual mechanism for impartingmovement to the devicei j Theotlier end of the sleeve'l has'an annularrecess 3 `of larger diameter than the nor`l mal bore ofthe sleeve whichterminatesat its end opposite the portion?.` ivithanfan-l nular inwardlydirected rib or vflange/l. The other Aextremity ofthe' recess 3 isformed by means of Va shoulder 5.

.The vstock'-engagigng elements are shown of ywhich has 'one end formedivith'a portion of largerV diameter as shown at which Between the ribs 8and 9 are adapted toi/be positioned oliie'or more split" spring rings10;

As shown the segmentalsections a're'forined to rock on reach-other,`forthis purpose each kbeingprovided with a pinor fulcrum' inember '1lprojecting fronione side closely` adjacentthe portion'8-j [The springs10 then' act"` i to `force the outwardei'ids of thefelementj towardyeach other, rocking the lmembers about their'ffulcrum' points 11,thisaction yserving also to separate 'the inner ends of1 thev sect-ionsto retain 'the portion 7 within l 'the recess 3 and to open thel innerends of the sections to their maximum' extent to ref-.

Vceive lstoclr presented thereto through the opposite' end ofthe sleeve;`The elements 6 sleeve. .The inner end fof the 'boi'e of ythe members `6maybe flared as' shownat-lG to conform to the'interior diameteroffthe`thus interfit and interlock ieX'ibly with the` sleeve so that stock maybe readily guided "therebetween, the stock', 'when in position,retainingthe elements 6 outl ofvfcontactlivith each other. In order thatthey may befasse'mbled and disassembled `vvith relation. to

, the sleeve l, the adjacent'l sidesof the portion .G are Vcut aiv'ay asshoiviiat l2 s'ovthat 'the outer ends offthefseginentsf6are permitted tobe'separated, these segments 'rocking about their pivotsllftoretract-tlie portions from l the recess `3 so as to permit them tobe Wthdr'aivn endwise froinithe sleeve Y YA vdoivelpiii l5 is shown asextending inivardly fronifthe'sleeve into the recess 3 and when theelements 6 are in .position rthis 4duivel :projects between an adjacentpair Within the ci'itouts l2-"andso retainsgtliein5- from .rotation`relative" to thev ysleeve-n As s'lioivn' three suclfi'elements areprovidedl though 'more might be provided if desi-red IandWl'ien'threejare used, the one not engaged by the doivelis free to befroclzed in- Wardlyto'be'releasedfrom the sleeve, WhereiipontheV pairfin 'contact vWith doivel may'befseparate'd therefrom andl removed.

. Itv will be seen from thisdescription thatV the stoclrfengaging 1elen'ients i are lfleiiibly unitedto" the'sleevelat vone joi'ily'rv andotherwise" are not housed by the "sleeveavhichv Y ingfposition,A I *Y vj A. 'finentsand `one end oflf said sleeve being 30 Y,

therefore is not required to be ofsuiiicient Vinternal diameter topass-about4 thevstock- 'engagmg i a.

springs so that the internal diametersefthe sleeve and `termed aty oneend 'to intertitone 'endlof said sleeve andvme'a'ns'ior urging suchelements inwardly'` to gripstock extending therebetween and through"said sleeve. l

`'2. `A device ofthe Class 'd'escribedlc rniipiising af sleeve, a'Seriesoitv stock-engaging eleinentslongitudinally "'rocka'ble on =each other'and '-'spriiigs`l surrounding" said 'seri'es fand urging 'said elementsinto stockrl'ainpone 'eiid oi:` s aid series4 or ele- Vformed tointerlock.' a

8. A.deviceoi' the class "described coin-l fprising" afsleeve, aseriesof stock-'engaging elements rockable on Veach other,psprings surroundingsaid? series adjacentsaid' end H Vand furging" "said elements intostock-clamping position, the :other endsjot said velements and'one` Hdof said sleeve'being'"orinedto interlock, and ineansffor preventingvrelative rotation or said elements fand' sleeve jabout the lairis ofsaid sleeve.

g 4. A device of the class'des'oribed*comprising asleevehavinglat oneend an 'internal enlargement defined at fthewend ofthe sleeve by 'anVinternal annular rib,v aplurahty ofV segmental stock-engaging elementseach `'having a projection 'at `one end Hforming f when said elementsareV assembled van' exter- `nal annular, rib Vfitting-into saidenlargement and' preventing disengagement Y'of said elements-ifionisaidv sleeve; the'faces' of said lelements adjacent each other being cutaway at their inner ends wherebyl their outer ends may' be separatedjto' Withdraw their inner enfdsrroin 'interlocking lfengagementk vvith'saidisleeve, and means `for urging's'aid outer v ends togetherfintoclamping relationto stock A`ext'eiiding therebetween vrand through said5L A device'ofthe class described'conipris- Vinga" sleeve having 4atVone end 'an' internal V enlargement Adelined at the VVend of the Ysleeve. V'bv an 'internal annular ribryHafplurality101 segmentalstoclrenga'gi'ng A "elements veach having ajprojection atf'one' Aend"f'crining 'ivli'en' said :elenie'i'i'ts are assembled 'an externalv'anniilar rib fitting into said en'la'rgementl andv preventingdisengagement' of said elermentsfromsaidsleeve, the faces of saidAelementsY adjacent each other being ycut away at their inner endswhereby their outer endsilmay be separated t0 Withdraw their inner endsltrom interlocking engagement ivitlrsaid"sleevefeaclrof said elementshaving an external projection adjacent its outer end and an externalprojectionadjacent': the endet said sleeve thesep'rojectionsdeliningannular yribs vvli'enr'said 'elements' are Ias-V "sembledyan'd one orymore spring' ringsenfgaging "about saidl elements between said ribs ffoiig holding said "outer ends closed against stock therebetween andsaid inner vends intei'loc'led' With said sleeve.

6, 'A'. 'device ofthe class'deseribed coin-` Aprising ai sleevehaving'attoneoend an internal enlargement v`defined atztheend ofthe L.'

sleeve by an internal' annular rib,"A afp-lurali'ty "of segmental'st0ckiengagii'i'g elements-g each '-fhavi-nga'projection at 4oneend'liorniing'when sai'd elements 'areAAV s'seinbledzan externalf'an inularr'ib"fitting-fi 'tof'"sai` p` 'event ing `disengagement"ofsaidigeleinents rv oin'said' sleeveytheiaces of sa'idteleinents 1adjacent eafchf other v being ciitawayA 'at ftheir "inner ends whereby'theirouter; ends* inayfbe enlargement-and 'separated to ivithdraw theirinnerendsfrfom i'nterlocking engagement 'With 'said y' s'leei'fe,

eachorsaid Ve'lein'eneshaving /anf external projeetion" adjacent itsonter 1endandanexy'ternalg, projection adj acent Y thef end tof' said-sleeve these 'rejections ""'denningfannrlar Aribs 'when sai elements'arefasseinbl'ed, none or jniore spring rings' engaging about: saidelem-ents" between said-"ribs l'orholding said t y outeivends closedagainst stock therebetween and said inner endsvv interlook'ed vvithysaid sleeve Y," and means for `pr'evei'iting relativerotationbetweensaid sleeve" and elein'ents.

prising a V'sleeve Vhaving`- at one end an zin- V"ternal enlargementdefined at the endvv ofrthe sleeve by an internal annular frib,vai'plurality oi 'segmental stock-engaging' elements each having aprojection'at one end' forming when saidV `elements -jare assembled "an'ex'- ternal annular rib "fitting Vinto saidl enlarge- Vment and ipreventing disengagement 4of said.

elements from ksaid sleeve,v the' faces of" said kelements adjacent'each otherbe'ing*cutaway 'at their inner ends whereby'tlieirlouter ends niay be separated to YWithdraw their inner kends'from interlocking, 'engagement with said sleeve, each'ot1 said.elements liavingan external" 'proj ection adjacent its vouter end j`and 'an external projection 'adjacent the end `ol said sleeve theseprojections 'definingjannular ribs when saideleinentsare assembled,

one or more spring rings'engaging about l said elements between "saidribs 'ior holding. 'said' vouter ends' Vclosed 'against'stockftherebevtween' and" said 'inner ends interlocked with lsaidsleeve, and a pin lixed to said sleeve and` largement definedat the; endof the sleeve yby an internal annular rib, a plurality of segy mentalstock-engaging elements eachfhaving a projection at one end forming Whensaid elements are assembled an externalV annular rib itting into saidenlargement and preventing disengagement of sa'idV elements from saidsleeve, the fac-es of said elements adjacent each other being cutaway attheir inner ends whereby their outer lends may be separated to Withdrawtheir inner yends from interlocking engagement with said sleeve,V

each of said elements having an externall projection adjacent its outerend and an e'xternal projection adjacent the end of said. sleeve theseprojections defining annular ribsl when said elements are `vassembled,one or more spring rings engaging about said ele-v ments between said'vribs for holding said outer ends closed against stock therebetweenandsaid inner endsl interloclredwith said sleeve, and a pin fixed tosaidfsleeve and engaging between a pair of adjacent elements to preventrelative rotationv betweenV said elements and sleeve..

9. A device @i the" Ciassaeseribed com prising -a series ofstock-engaging elements, j'

elements, and lsprings for retainingsaid elements assembled with saidsleeve.` Y

In testimony whereof I have affixed iny signature- Y coin- FRANK L.GONE,

